How do I tell what Edition (Standard,Enterprise) I've got installed
(8.1.7.0.0 on Win2K)

Just had a disk array disembowel itself on an old box running 8.1.7 on
Win2k. Managed to recover it to another box with a fresh install of Oracle
8.1.7.0.0 Standard Edition. When I initially started it up (with original
init.ora) it complained that Managed Standby was not available (due to
log_archive_dest_1 being set). Anyway, fixed that and everything now works.

But it makes me think that we had Enterprise Edition installed If this was
the case is there any way of confirming it and is there any problem with
running the database with Standard Edition software given that was
originally Enterprise. Oracle starts up OK, no errors in log It's a very
simple system, just a bit bucket for an application.